Bobbin structure for electromagnetic coil assembly

Details Bobbin structure for electromagnetic coil assembly Bobbin structure for electromagnetic coil assembly

1994-12-30

1996-10-22

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 91, 336208, H02K 104

Patent

active

055679994

ABSTRACT:
A bobbin for use in an electric motor is formed in the nature of a clam shell, having two semi-cylindrical side portions which are joined together by a flexible hinge portion. Each of the side portions includes a plurality of smaller diameter regions which are separated from one another by larger diameter regions. When the two side portions of the bobbin are closed together by bending of the hinge portion, the smaller diameter regions cooperate to define respective cylindrical surfaces upon which coils of an electrical conductor can be wound. A pair of outwardly extending tabs can be formed on each of the larger diameter regions of the bobbin. When the two side portions of the bobbin are folded together, the two pairs of tab are disposed adjacent to one another. The upper and lower halves of the stator have respective pairs of recesses formed therein. The recesses are sized and positioned so as to receive the cooperating pairs of tabs therein. The cooperation of the tabs with the recesses can position the bobbin concentrically relative to the stator halves and prevent relative rotation therebetween. If desired cooperating locking structures can be formed on the tabs to retain them together before winding of the coils thereon.

REFERENCES:
patent: 3609427 (1971-09-01), Lautner
patent: 4103268 (1978-07-01), Anders et al.
patent: 4321572 (1982-03-01), Studer et al.
patent: 4603314 (1986-07-01), Fukunaga et al.
patent: 4638554 (1987-01-01), Beisser
patent: 4761629 (1988-08-01), Martin et al.
patent: 4769625 (1988-09-01), Meindl
patent: 4788465 (1988-11-01), Hertrich
patent: 4882561 (1989-11-01), Fujioka
patent: 4924200 (1990-05-01), Kitahara et al.

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